An update for the Mountain Lion Developer Preview has added a new feature that silences the OS's Notification Center. The "Do Not Disturb" switch sits atop the slide-out Notification Center and prevents pop-ups from being generated when activated. The feature comes as part of a larger update to the Developer Preview 3 that debuted last month, and brings the fledgling OS one step closer to a public release. It's a very simple addition, but a welcome one — and perhaps something that we'll see filter down to iOS soon.
Apple adds 'Do Not Disturb' switch to Mountain Lion's Notification Center
Apple adds 'Do Not Disturb' switch to Mountain Lion's Notification Center/
An update for the OS X Mountain Lion Developer Preview adds a "Do Not Disturb" switch to the Notification Center.